A close up of the weathering in various tones of pigment.
Another shot of the frontside. I used "Sand", "Light Sand" and "Dust" to apply those faded lines.
See the dust and pigments on the turret top? These were applied with the brush side of the applicator tool.
I mixed all pigments that came in the sets from Tamiya and used the applicator tool's brush to "drybrush" (the technique is the same as with a acryl or enamel paint) dust and sand into all recesses. Note the duffel bags in the lower part of the pic - it shows traces of multiple tones of pigment.
With the pen-side of the applicator I brushed carefully over all weld seams. I also applied dust to where the crew would most likely have went over on the top of the turrets.
The barrel of "Columbia 2", 2nd platoon, Charly Company, Task Force 1-64